Manipulator for rolling mills



July 17, 1923- 1,462,454 5 D. F. NISBET MANIPULATOR F'OR ROLLING MILLS Filed Jan. 16 1922 3 Sheets-Sheet l INVEPITOR milmxwm ATTORNEYS 3 Sheds-Sheet 2 D. F. NISBET Filed Jan.

MANIPULATOR FOR ROLLING MILLS Jul 17, 1923 I: .M FD i wim 11m ll l Q INVEN OR ATTORNEYS JulyIY, 1923- D. F. NISBET MANIPULATOR FOR ROLLING MILLS Filed Jan. 16 1.922 3 Sheets-Sheet & INVENTOR mm ATTORNEYS Patented July 17, 1923.

entree rates lanai earner ran- DAVID E. NISBE'I, OF GRAFTON, PENNSYLVANIA, ASSIGNOB TO MACKINTOSH-HEMP- HILL COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYL- VANIA.

MANIPULA'IOR FOR ROLLING IVIILLS.

Application filed January 16, 1922.

T all whom it may concern.

Be it known that 1, DAVID F. Nisnu'r, residing at Grafton, in the county of Allegheny and State of Pennsylvania, a citzen of the United States, have invented or discovered certain new and useful Improvements in Manipulators for Rolling Mills, of

tion to enter the desired pass of the reduc ing rolls.

The object of my invention is not only to provide means for aligning the ingot, slab, billet or bar, in front of the pass, but also to turn the ingot, slab or billet so as to pre sent fresh surfaces to be acted on by the rolls, and more particularly to upturn and hold on edge comparatively wide and thin slabs for edging.

A further object of the invention is to pro vide an applianceof the manipulator class that is simple in construction and eflicient in operation, and in which none of the parts or elements of the operating mechanism is located beneath the roller tables, and hence are not exposed to roll scale and other detritus. I

In the accompanying drawings forming a part of this specification, Fig. 1 is a plan view of a rolling mill and feed tables having my invention combined therewith; Fig. 2 is an end elevation of the manipulator with the manipulating element shown in its lower, receded position; Fig. 3 is a simlar view showing the manipulating element in its upper receded position; Figs. 4 and 5 show the manipulating element in upper receded and upper extreme position with parts of track beams broken away to show the means by which the manipulating head 5 is compelled to move approximately parallel with the rolls of the feed tables, as will be hereinafter explained; Figs. 6 and 7 are sectional detail views, the planes of section being indicated respectively by the lines VIVI, Figs. 2, 3 and 4 and VIIVII, Figs. 2, 3, and 5.

In the practice of the invention the feed table, consisting of a plurality of positively driven fed rolls 3, is arranged in suitable relation in front of the stand of reducing Serial No. 529,402.

rolls 1, as is the usual practice. On one side of the feed table is arranged a suitable mechanism of any construction known in the art, whereby the side guard or rail 4 can be shifted along the rolls in a direction transverse of the feed table, so as to shift the ingot, bar, etc., to be rolled into aline ment with the desired pass in the rolls, and to also act in conjunction with the guard rail, or, as it will be hereinafter termed, the manipulator head 5, which is adapted to be shifted horizontally and vertically to move the ingot, etc., across the feed table and to turn the ingot, etc., axially. This manipulator head 5 is secured on one end of beams 6, each of which is provided with two pairs of wheels 26 and 27, the wheels 26 being adapted to move along the parallel members forming rails 8, while wheels 27 are carried and supported by the pa 'allel members forming automatic beam adjusting rails 9. As will be seen by reference to the several figures, the rails 8 are pivotally supported at their outer ends on the shaft 12 passing through suitable bearings on a pillow block 13. These rails are shifted by means of fluid pressure cylinders 21 through the medium of the link members 22 connected at their upper ends to the rails 8. In order to equalize the movements of the rails, they being operated by independent cylinders, arms 23 pivotally connected at one end to the links or cross-heads on the pistons of the cylinders 21, have their opposite ends keyed on a shaft 2 The rails 9 are arranged intermediate the members forming the several rails 8 and at one end are pivotally connected thereto by pins 10. The opposite or outer ends of these rails are supported by links 7 pivotally connected to the beams and also pivotally connected to base block 1a of the manipulator mechanism. The movement of the arm 6 carrying the manipulator head 5, transversely of the feed table, is effected by means of fluid pressure cylinders 18 connected to an arm 16 on a shaft 17 on which are also secured arms 15 having their upper ends connected by links 29 to the beam 6. the rails 8 which carry the beams 6, having secured thereto the manipulator head 5, are pivotally mounted, the path of movement of the head transverse of the feed table would be at an angle to the axes of the rollers of the feed table if both pairs of supporting wheels 26 and 27 of the beams 6 were carried on the rails 8, but as the rear wheels 27 of the beam 6 are supported by the intermediate rails 9, the latter are coir nected to the rails 8 and to a stationary pivotal point so that the rails 8 and 9 will assume an. angular position relative to each othervon a shifting oi the rails 8. As "for example, it the rails 8 are raised, the left hand end of the vibrating rails 9 will also be moved up, but as thepivotal points 01' the vibrating rails 9 do not coincide with the pivotal points of the rails 8, the angular position assumed by the rails 9 will be different from that of the beams 8. This will be clearly seen by reference to Figs. 4 and 5. In Fig. l the manipulatorhead is shown at the extreme right hand position and raised. It now the beam 6 and the manipulator head 5 be shifted to the left, the wheels 26 will travel along the rails 8 and the wheels 27 along the rails 9, and on account of the angle of the rails 9 to the rails 8., the rear ends of the beams 6 will be raised as the latter move to th left. so that the plane of travel of the, head will be parallel with the axes of the rollers of the feed table. As shown in Fig. 2 the rails 8 and intermediate rails 9 will have their upper edges in the same horizontal plane when the manipulator beams are in their lowest positions. As shown in the several figures, the heads 5 are provided with a downward extension 5 and to these extensions are securee angular blocks 28 adapted to pass under an ingot lying on the feed rollers, and when raised, to turn such ingot axially. As shown in Fig. 5, the side guard 4 and the manipulator head 5 may be so shift-ed relatively to each other as to support, when necessary, a slab in an edging position.

It is a characteristic of my improvment that means are provided whereby the head 5 will be moved vertically in the arc of a circle and that in its movements transverse of the food table, it will move in planes parallel with the axes of the rollers of the feed table.

I claim herein as my invention 1. A feed table for rolling mills in combination with pivotally mounted rails arranged parallel with the rollers of the feed table, beams carried by said rails, a manipulator head secured to the beams, means for shifting the beams along the rails and means for moving the rails on their pivotal axes, and means operative by the rails for shifting the beams to angular position relative to the rails.

2. A feed table for rolling mills in combination with pivotally mounted rails arranged parallel with th rollers of the feed table, pivotally mounted auxiliary rails connected to the main rails, beams supported at a point adjacent to their outer ends by the auxiliary rails and at an intermediate point by the main rails,amanipulator head secured to the beams, means for moving the beams longitudinally and means for raising and lowering the free ends of the main rails.

3. A feed table for rolling mills in com bination with pivotally mounted main rails arranged parallel with the rollers of the feed table pivotally mounted auxiliary rails having their axes eccentric to the pivotal axes of the main rails and having their free ends connected to the main rails at points intermediate the ends of the .main rails, beams supported. at points adjacent to their outer ends by the auxiliary rails, and at points intermediate their ends by the main rails, a manipulator head carried by the beams, means for raising and lowering the free ends of the rails and means forshifting the beams longitudinally of the rails.

In testimony whereof, I have hereunto set my hand.

DAVID F. NISBET. 

